A cobpobation oi



c. M. MaocHEsNEY ET AL. 1,730,669

SEALING DEVICE 4 Sheets-Sheet l Filed NOV. 19. 1926 Oct. 8, 1929. c..M.MaccHl-:SNEY ET AL 1,73039 SEALING DEVICE Filed Nov. 19, 1926 4Sheets-Sheet 2 Y ffys Uct. 8, 1929. c. M. Mac'cHEsNEY ETAL I V 1,730,569

SEALING DEVICE Filed Nov. '19, 1926 4 Sheets-Sheet 4 in I Patented @et8, i929 paires lditiiil CHESTER M. MACCHESNEY AND JOHN EKEBN OTT, FCHCAGO, LLINGS, ASSGNGBS T0 ACME STEEL COMPANY, OF GHCAGO, ILLINOS, ACGREORATN OF LLNOIS SEALING DEVICE Application led November 19, 1926.

This :invention relates to improvements in sealing divices and itspurpose is to provide improved means ttor applying and manipulating' aseal on the overlapping ends ot' a strap or the like tor the purpose otsecuring said ends together. 'lhe principal object ot the invention isto jnovide a sealing device adapted to hold a seal during the operationot applying the device to a strap and having` means tor bending' theseal around the strap and slmaring.;i both the strap and the seal toeiiect a tigh anion ot theoverlapping ends oit the strap. Another objectof the invention is to provide :improved means tor automatically holdingthe sealing blank in preliminary position in the sealing device beforethe sealing operation jlieriforined. Still anotherobject of theinvention is to provide a sealing device having iinprovedsdie memberstor bending the sealing member' into tight 'lirictional engagement withthe strapl and for effecting a shearingl action on the seal and thestrap transversely to the direction in which tension is applied in thestrap. A further object of the invention is to provide improved meansfor guiding the bending.,y and cutting dies ofA the sealing device sothat a symmetrical seal is formed. Another .teatnre is the provision ofa sealing device having cooperating cutting edges which are relativelylined when the shearing torce is applied to the seal. A inrther feat-nrethe provision ot a device capable oi use in applying various itorms o'lseals such as tubular seals or channel shaped seals having straightortapered sides. Other objects relate to various features otconstruction and arrangement which will appear more tally hereinafter.

'lhc nature ot the invention will be understood -l`ron'1 the 'followingspecilication taken with the accompanying drawings in which twoembodiments are illustrated. ln the drawings, Figure 1 is a pers pcctiveview showin a bei: and the improved sealing device ot nt inventionapplied to a reinforced strap extending around the boi: for the purposeet' sealing the overlapping ends of the strap; F ig. 9. shouf's a planview of the relatively mova ble heads which carry the bending andcutting dies of the device; Fig. 3 shows Serial No. 149,307.

termediate position ot the arms and the jaws or heads, `the walls orlegs ot' the seal being partially bent over the overlapping ends ot thestrap; Fig. 6 is a sectional view similar to that et Fig. s*illustrating the tinal position of' the jaws or heads ot' the deviceafter the dies have operated to bend the sides or legs ot the seal andshear the seal as well as the strap; Fig. 7 is a sectional view taken onthe line 7 7 o't Fig'. 3; F ig. 8 is a sectional view taken on the line8 8 ot F ig. 3; F 9 is a detail sectional view taken on the line 9-9 ofFig. 3 illustrating one means ot' holding the heads and aws inpredetermined relative positions; Fig. 10 is a perspective view of oneof the heads and its aws with the cutting die mounted in positiontherein; Fig. 11 is a sectional view taken on the line 11-11 ot 10; Fig.12 is a perspective view or" the saddle on which the seal is seatedduring its application to the strap; Fig. 13 is a perspective view or"the overlapping ends of the strap showing the sealing .blank oi"Ll-shape cross-section applied thereto, illustrating the relativepositions ot the parts beiore the sealing blank is `operated on by thedie members; Fig. ll is a perspective view similar to that ol F ig. 13illustrating the resulting seal after the sealing device has operated onthe blank and the strap; Fig. 15 is a perspective view or' another formot channel seal having tapered sides which may be used with the improvedsealing s device; Fig. 16 is a perspective view ot' a closed or tubularseal with which 'the sealing device may also be employed; Fig'. 17 showsan elevation ot the die carrying heads of ainodilied torni ot' theinvention; Fig. 18 is a sectional view talen on the line 18-18 of Fig.17 showing the interior construction the device; Fig. 19 is a sectionalview taken on the line 19-19 et Fig. 18; Fig. 2O is a sectional viewtaken on the line 20-20 of F ig. 19; Fig.

21 is a sectional View similar to that of Fig. 18, illustrating anintermediate position of the parts with the arms of the sealing blankpartially bent toward their final positions; Fig. 22 is a sectional viewsimilar to those of Figs. 18 and 21, illustrating the positions of theparts after the dies have moved the parts of the seal to their linalpositions. Fig. 23 is a sectional view taken on the line 23-23 of Fig.21; Fig'. 24 is a perspective view of the holding slide of which thesealing blank is held in position preliminary to applying it to thestrap; and Fig. 25 is a perspective view of the anvil embodied in thedevice of 17 to 2st, inclusive.

Referring to Figs. 1 to 12, inclusive, the first form of the invention,designated generally by the numeral 25, comprises two similar operatinglevers 26 which are provided with handles 27 and which are benttransversely at their other ends, as shown at 2G, so that the two leverscross each other as illustrated in Fig. 1, terminating beyond the pointof intersection in enlarged heads 28 adapted to carry the bending andcutting jaws which engage the sealing` blank to be operated on by thedevice. The levers 2G are not connected at the point of intersection buthave a pivotal connection to each other through two cheek plates 29which are located on opposite sides of the heads 28 and which areYpivoted to each of said heads by pins 30. The pins 30 are provided attheir opposite ends with grooves 30 adapted to receive spring clips 3llocated in contact with the surfaces of the cheek plates, as shown inFigs. 2 and 3, and having U-shaped parts 31 adapted to enter the annulargrooves 30a in the pins to retain the pins in assembled relation withrespect to the other parts of the device. Each of the spring clips Bl isprovided with an angularly disposed resilient extension 31b adapted tocontact with the adjacent cheek plate with sufficient pressure toprevent accidental removal of the spring clips from the ends of thepins. The spring clips preferably have trie extensions 31J extendingslightly over the edges of the cheek plates, as illustrated in Fig. 8.The outermost edges of the cheek plates 29 are provided with oppositelydisposed rectangular notches 32 adapted to receive the strap or othermember to which the seal is to be attached by the operation of thedevice. The sealing blank, formed separately of sheet metal, may be inthe form of a channel-shaped member 33, as shown particularly in Figs. 3and 123, having a base and two transversely extending legs or walls 33h.rFhe sealing blank may also be in the forni shown in Fig. 15 where theside walls or legs 34@ of the blank are shown converging slightly towardtheir outer ends, or the blank may be of the closed or llat tubular formBab shown in Fig. 16, in which case the blank must be threaded on theends of the strap before applying the sealing device. The blank or othersealing blank is adapted to be received in the space between therectangular notches 32 and is adapted to seat upon a saddle having theform shown particularly in Fig, 12, being provided with an outer flatsurface 35 which contacts with the sealing blank and with oppositelydisposed downwardly converging concaved surfaces 35" which extendpartially between the heads 2S of the lever arms 2li. The saddle 35 isprovided at opposite ends with trunnions 16 which engage suitablebearing apertures or recesses formed on the inner sides of the cheekplates 29, as illustrated in F 8.

In using the device to apply a seal to a strap or the like, the seal 33is first placed in the device 25 in the position illustrated in Figs. 3and 4i and, with the sealing blank held in the device in the mannerhereinafter described,the operator brings the device into proximity tothe overlapping portions of the strap to he sealed, as illustrated inFig. lv1 where a bei: 3T is shown as having two sheet metal straps 3Textending around it. The sealing device 25 has been operated to forni aseal Si on one of the straps and is in position to ferm the seal on theother strap.

The heads 28 of the scaling device are otl'set laterally as shown inFig. 2 wi th respect to the body portions of the levers 2G, to permitthe inclined portions 2liL of the leversto cross each other as shown inFig. 1, and upon relative movement of the heads 28 about the pivot pins30, the walls or legs 33h of the seal ing blank 33 are bent inwardlyover the overlapping portions of the strap. This inward bending iseffected by means of jaws or bending dies 38 which are formed on theupper and inner sides of the heads 28, leaving undercut recesses i9beneath the jaws, as shown, for example, in F 4. Extending downwardlyand outwardly from the lower walls 39 oi each recess 39 is a channel 40of circular crosssection adapted to receive the cylindrical portion 41aof a cutting die 41. rI'he channeh ti) are circular in cross-secton toreceive lne cylindrical body portions 4l of the dies which terminate incutting portions l1" of rectangular cross-section arranged to projectinte the notches 42 by which the jaw $58 on each head is divided intotwo parts. Each notch Ll2 extends inwardly beyond the lower surface 39of the adjacent recess and .has a flat bottom wall extending radiallyoutward from the traveling pin hereinafter described. The parallel sidewalls of the notches l12 Aengage the side walls of the portions 41") ofthe dies and the shoulders at 'the inner ends of the portion l1d of thedies engage the shoulders a at the inner ends of the channels 40, theseshoulders being in line with the bottom walls of the respective notches42. The part 411 of each die is provided With a. transversely extendingnotch lll) 43 of substantially semi-circular form which is adapted toreceive and be closely fitted by one of the pivot pins 30. The pins thusserve to retain the dies 41 in position within the channels and permitthe dies to be readily replaced when desired. rl`he cutting portions 41"of the dies project inwardly beyond the surfaces 39a of the recessesbeneath the jaws and the notches are of the same width as the projectingportions of the dies 4l, so that when a cutting die 41 `is brought intocontact with the seal, the metal on the opposite side of the seal can beforced upwardly into the opposite notch 42, the edges of which formcomplementary cutting dies. The sides of the saddle 35 are similarlyprovided with notches 35G adapted to receive the dies 4l when they aremoved upwardly.

When the sealing blank 33 or other sealing blank placed in the sealingdevice 25, the jaws are widely separated as shown in Fig. 3, the extentof this separation being limited by a projecting lug 45 on one of thelevers engaging the laterally projecting` .head 28 on the other lever.After the seal has been inserted, the levers 26 are adapted to bereturned automatically to a position wherein the sides of the seal willbe gripped by the opposed jaws with sufficient pressure to retain theseal in place during the application of the seal and sealing device tothe overlapping ends of a strap in the manner illustrated, for example,in Fig. 1. This operation of the lever arms 26 is ell'ected by theoperation of a ball 46 mounted in a bore 47 which extends through one ofthe levers 26 and partially into the lug 45, as shown in Fig. 9, theball 4G being pressed by a coil spring 48 so that it engages a recess 49formed in the face of the opposite lever 26 when that recess is broughtinto alignment with the ball by the location of the levers in thatrelative angular position which will cause the sides of the seal to begripped by the jaws as explained above. One side of the recess 49 istapered as shown at 49a to permit the ball 46 to ride partially out ofthe recess during the operation of separating the levers 26 to theextreme position wherein the lug 45 engages the head 23 of the oppositelever. "When the levers and jaws have thus been separated to the extremeposition and the seal has been inserted, the pressure of the ball 46 onthe inclined surface 49"* will automatically return the ball toengagement with the bottom of the recess 49 and thus move the jawsinwardly to the position wherein they engage the sides of the seal, suchas the walls or legs 33b of the sealing blank 33. The sealing device maythen be conveniently moved by the operator to cause the overlapping endsof the strap to be received by the seal in the recess between the jaws38. ln case the tubular type of seal shown in Fig. 16 is employed, theends of the strap are threaded through the seal before the sealingdevice is applied but the seal 34 shown in Fig. l5 may be applied to thesealing device before engagement with the strap as in the operation ofthe sealing device with the form of seal shown in Fig. 13.

The relative arrangement of the jaws 38 wherein the legs of the sealingblank 33 are gripped by the jaws and are in engagement with theoverlapping ends of the strap 37, is illustrated in the sectional Viewof Fig. 4. After the parts have been placed in this position, a pressureupon the lever arms 26, imparted through the handles 27, will overcomethe resistance afforded by the engagement of the ball 46 with the recess49, and upon further movement of the lever arms 26 inwardly toward eachother, the jaws 33 will bend the legs 33b of the sealing blank inwardlyover the edges of the strap 37a, as illustrated in Fig. 5. During thisoperation, the two heads 28 and the two jaws 33 are retained insymmetrical arrangement with respect to the cheek plates 29, an d theparts ca rried thereby, by means of a traveling pin 51 which is locatedbetwoen the heads Q8 and between the cheek plates 29. rllhis pin is ofsymmetrical form and the curved surfaces thereof are engaged on oppositesides by recesses 52 which are .formed in the oppositely disposed curvedfaces 53 of the heads 28. These curved surfaces 53 are adapted to coactwith the similarly curved surfaces 35b of the saddle 35A and thesesurfaces are concentric with the of the pins 3() so that .in allpositions of the jaws, any pressure received on the saddle 35 istransmitted to theheads 23, thereby preventing any undue strain on thetrunnions 36 which retain the saddle in position. As the heads 28 arerocked about the pivot pins 30, the traveling pin 51 moves downwardly asviewed in Fig. 5, so that the jaws 38 are retained in. symmetricalposition with respect to the blank 33, and the legs 33b of the blaulrare bent inwardly in unison and to the same extent over the topsurfaces` of the strap. During this bending operation, the legs 331 arebrought into tight frictional engagement with the lateral edges of thestrap and the bottom wall of the seal is retained in close engagementwith the strap 'by the underlying saddle 35 so that as the bendingoperation continues the legs 33b are forced downwardly into contact withthe top surfaces of the strap and at the -same time the cutting dies 41are brought into action so that the inclined cutting edges 41C of thesedies engage the lower outer corners of the seal 33. as shown in Fig. 5,and then force the seal and oppositely disposed portions of the strapupward- .ly with the result that the seal and the strap are sheared bythe dies against the cutting edges formed by the walls of the notches42, as shown in Fig. 6, thereby forming a sealing joint having the formillustrated in Fig. 14 where it will be seen'that the opposite sidesstrap 37a. This shearing action thus produecs abutting edges on the sealand ,st-rar which eiiiectnally prevent relative separat-ion or' theoverlapping ends ot the strap in the manner indicated more telly inUnited States Patent No. 1266616, granted March 19,19181 on theapplicati n otllalphl-l. llorton. rl`he inward movement of the heads 26and the extent o'l` the shearing action is limited by a lug on one ofthe levers engaging the edireo'lf the other lever.

lilhen the scalzi i' device is employed with the sealing blankA yi shownin AFig. l5. the i, fetai Ml .i in i gementwith the strap b v theinclinar he legs ot he seal and in the subs, ident operation ot' thedevice the legs olE the seal are bent sea.

inwardl i as in the operation ot the device npon the seal 33. l' 'Then tie sealing device is used with the seal o@ shown in Fig, 16` it isunnecessary for the et the scaling device to peA iorm the preliminarybend eration bnt after the jaws l inwardly te the necessaryv et the sealand strap are shea eraaion explained above, to toi-1n a tight joint ingthe overlapping enea oi the strap.

A Y, apparent that by the operation et this invention, the ovmlappingends of a strap or the like may l, rigidly and permanently secured toeach other in a convenient manner and that the overlapping ends ot thestrap are held tog iher not only by trictional tact with the seal.. butalso by the abutting es of portions of the seal and which ha beensheared by the operation ot' the cutting dies, 'lfhe ina nlation ot theparts which permits the se Y retained in position wigain the sealingdevice during the process of applying the sealing device to the strap..makes it possible to operate the device 'with great convenience and withgreat speed in applying to straps which have been pas i r stretchedaround boxes or other packagfs by means of other tools which may beemployed Yfor that puriosa.

The modified form ot the invention illustrated in l to 22h inclusive,differs from the torni first described chierly in the differentcharacter of the means for holding the sealing blank in position withinthe sealing device preliminarily to applying the blank to the strap andin the means for holding the cutting dies in place. ln this form of theinvention, there are two levers 66 which cross each other at 66, beingprovided at their operating ends with enlarged heads 6l. These heads areollset laterally as in the first form of the invention so that theypermit the operating levers to cross eac-h other in the mannerillustrated, The heads 6l of the levers are connected by pivot pins 62with cheek plates 63 having a form similar to the pre viously mentionedcheek plates, the pivots 62 in this case being in the form of boltswhich are secured by nuts 64 to hold the cheek plates in assembledrelation on opposite sides ol the heads 6l. The cheek plates 63 are provided with notches 65 of rectangular crosssection adapted to receive theoverlapping portions ot the strap 66 to be connected by the seal ingblank 67 which may preferably be ot' channel form, having a base 67L andparallel side walls 67h, as shown in Fig. 16, although other forms otblanks may be enlployed. then the sealing blank 67 is in position,between the outer portions of the head 6l, it is seated on a saddle 68having the form illustrated particularly in Fig. Q3, the saddle being`provided at its ends with trunnions 69 which pivotally engage suitablerecesses formed on the inner sides ot the cheek plates 6?).

In this Yform of the invention, the sealing blank 67, when placed on thesaddle 68, is held in position during the opera-tion ot' applying thesealing device to the strap by means ola retaining device 70 comprisingtwo plates 7l connected by a cross-pin 72, as shown particularly in Fig.22. The crosspin 7 2 Jforms a traveling member which engagessemi-circular notches 7 3 formed in the adjacent curved faces 6ln of theheads 6l, thereby7 maintaining a symmetrical arrangement of the heads 6lwith respect to the cheek plates 63 when the levers 60 are manipulated.The plates 7l of the retaining device are provided with notches 74 whichare adapted to receive the trunnions 69 of the saddle and the tongues7la which are thus formed on op posite sides of the notches 74 havetheir ends 7lb bent inwardly to engage 'frictionally the ends ot' thechannel-shaped sealing blank 67. The plates 71 of the retaining deviceare mounted to slide in grooves 75 which are 'formed on the inner sidesof the cheek plates 63 so that when the levers 60 are operated to movethe heads 6l in the bending and shearing operations, the retainingdevice 70 is drawn inwardly by the movement of the traveling pins 72,thus withdrawing the ends of the lingers 7ln and permittingr the strap66 to pass into engagement with the base 67 of the sealing member seatedon the saddle. The lateral concaved taces 66n ot' the saddle coact withthe curved faces 61l of the heads so that the saddle is supportedindependently of the trunnions.

The heads 6l ot the levers are provided at their outer ends withinwardly directed inclined jaws 77 having spaces 78 located beneath themand these jaws serve as the bending dies for turning the legs 67b of thesealing blank inwardly over the sides of the strap Cil opposite the base67 a of the sealing member. The jaw 77 on each head is divided into twoparts by a notch 78 having a lower wall 78a located well below thecurved faces 61 of the heads. The shearing of the sealing member and thestrap is effected by means of cutting dies 79 having inclined cuttingfaces 7 9n adapted to engage the edges of the seal and strap when thejaws 77 are closed toward each other. rlhe notches 7 8 are ofsubstantially the same width as the cutting portions 7 9? of the dies 79and the e'dges of the notches 7 8 serve as complementary cutting diesfor partially shearing the seal and the strap. The cutting dies 79 areprovided with cylindrical stems 7 9 which fit into channels 81 formed inthe heads 61 and these stems are normally retained in place by plugs 82which threadedly engage the outer ends of the channels 81 and which havegrooves 82n for engagement by a screw driver. The cylindrical por! tions79c of the dies engage shoulders 83 whichare in the planes of the bottomwalls 78a ot the notches 7 8 which are engaged by the narrower cuttingportions 7 9b, as shown .in Fig. 24. The movements of the heads 61 bythe operation of the levers 60 are limited, as in the irst form of theinvention, by

means of lugs attached to the handles and engaging the heads. j

ln` the operation of the second form of the invention, the sealing blankis first placed in position within the retaining member and in contactwith the saddle 68, whereupon the operator moves the sealing devicebodily until the arms `67 1 of the seal are projected on opposite sidesof the strap 6G, the strap being engaged on one side by the projectingends ot the fingers 71a of the retaining members, as shown in Fig. 18.Upon relative movement of the handles 60 to effect a movement oit theheads 61 toward each other, the jaws 77 move inwardly and, at the sametime, the cross-pin 72 moves toward the handles of the levers with theresult that the plates 71 are withdrawn and the overlapping ends of thestrap 66 are permitted to pass into engagement with the base 67a oi thesealing blank. At the same time, the inwardly moving jaws 77 bend thearms 67a of thesealing member, over the edges of the strap, as shown inFig. 21. As the movement of the levers continues, a position is finallyreached where the arms 671J of the sealing memberare bent downwardlyinto-contact with the strap as shown in Fig. 22 and, in this extremeposition, the cutting dies 79 will have forced the outer edges of thesealing member and strap against the jaws with the result that the edgesof the strap and seal are sheared, thus `forming an interlocking ointwhich prevents longitudinal relative movement of the overlapping ends ofthe strap.

Although certain embodiments ofthe invention have been shown anddescribed by way of illustration, it will be understood that other formsof the invention may vbe constructed within the scope ofVV the appendedclaims.

lVe claim:

1. ,A sealing device comprising a pair of relatively movable handle`members, and means carried by said members tor engaging and bending anopen sealing member applied fue a strap and then shearing the sealingmem- 2. A sealing device comprising relatively movable handle members,and means carried by said members for moving transversely to a strap tobendV an open seal about the strap and then to shear the edges ofsaidseal and said strap.

3. `At sealing device comprising a pair of relatively movable handlemembers, means carried by said members for bending a seal about a strapupon movement of said members, and means operated by the movement ofsaid members for shearing said seal.

4. A sealing device comprising relatively movable members, separatebending and cutting dies carried by said members for engagement with aseal to bend and then shear the seal, and means for effecting movementof said members.

5. A sealing device comprising a pair of pivotally connected levers,heads mounted on said levers for movement toward and from each other,said heads being adapted to receive a seal and a strap between them, andmeans carried by said heads for lirst bending said seal and thenshearing the edges of said seal and said strap.

6. A sealing `device comprising a pair of levers having oppositelydisposed heads, means including a pair oi plates for pivotallyconnecting said levers, said plates having notches therein to receive astrap, said heads being adapted to receive between them a seal appliedto said strap, and bending and cutting dies carried by said heads forbending said seal about the strap and shearing the edges of the seal andstrap.

8. A sealing device comprising relatively movable members, means forholding an open sealing blank between parts of said members, and meanscarried by said members for bending` and closing said blank uponrelative movement of said members and then shearing the edges of thestrapjand the seal.

9." A sealing ydevice comprising relatively movable members, oppositelydisposed jaws carried by sait; members, and means carried "l members forelle/cting` the resiliently l ot an open sei. f 1g bla-nk between said jaws during' the application ot said device to a stra'o.

l0. LA sealing de ice comprisinpr a pair of relatively movable handleshaving opposite- ]y disposed hea-ds, and means operative in certainrelatfve `positions ot' said handles tor automatically holding an opensealing` blank between said heads.

ll. d scali-lne; device comprising,r relatively n'iovable meml rs havingoppositely disposed jaws, and means cooperating' with said members fornormally maintaining,T a predetermined relative separation of said jaws,said means beine; ,rative upon a further separation ot said j aws ttorholding a sealing blank between said awe.

12, il. sealing` device comprising a pair of pivotally connected levershaving' oppositely disposed jaws, and means tending normally to maintaina predetermined separation of said jaws, aid means being; operative uponfurther separationof said levers lor holdingr a sealing' blank betweensaid aws.

i3. A sealing' device comprising' a pair of pivotally connected levershaving' oppositelj. disposed jaws adapted to receive a seal betweenthem, one ot said levers having a recess, and a resiliently mountedmember carried by the other lever for automatic engage- 1 ont with saidrecess upon a predetermined separation of said levers.

lll. :l sealing' device comprising a pair of pivotally connected lev'rshaving oppositely disposed jaws adapted to receive a seal between them,one of said levers having;r a recess, and a resiliently mounted membercarried by 'the other lever for engagement with said recess upon apredetermined separation ol said levers, said recess being inclined onone fide to p nitI further separation otrsaid levers and said jaws underthe restraint of said resiliently mounted member.

l5. il. 0' device comprising; relatively movable heads having' inwardlydirected jaws arranged to engage and close the side of arl open seal,cutitngg dies located beneath and spaced downwardly from said jaws, and

'leans tor elifectiire` relative movement of said heads.

16. A sealing' device. comprising' relatively movable heads having;Yinwardly directed jaws, cutting; dies located beneath said jaws, andmeans for ertoe-ting relative movement of said heads, said jaws beingrprovided with notches located opposite said cutting' dies.

l?. A sealing device comprising relatively movable heads having inwardlydirected jaws, cutting` dies located beneath said jaws, and a sealsupporting.saddle located between said cutting` dies.

18. A sealing device comprisingT relatively movable members having anopening therebetween to receive a scaling blank consisting of a base andside legs, j f. carried by said relatively movable members 'for engagingsaid sidelegs and bending' them inwardly to close said side legs of theblank, and separate cut ting dies located beneath said jaws lorshearingl the edges of the closed seal.` i

19. A sealing device comprising` relatively movable heads having'inwardly directed relatively movable jaws adapted to c'l'lect the inwardbending' ot the lef ol a charmelw shaped sealing:r blank into parallelrelation with Yhe base of the blank, and cutting dies carried by saidheads Ylor engaging; and shearing' said seal after a j ncdeterminedmovement et said jaws.

20. ifi sealing device comprising a pair oil relatively moval'ilc hea dshavingY inwardly directed relatively movable bending jaws adapted toengr-age and bend the sides ot an open seal, said jaws having' notchestherein, and cutting' dies l cated opposite said notches r cooperationtherewith to el'l'ect the ciu j ot said seal upon inward movement olbeading` jaws.

A. sealing device comprisingy a pair ot relatively movable heads havinginwardly direttet bending jaws with recesses beneathv them, saidbendingl beingl adapted. to engage the side legs ot an openchannelshaped seal, said aws havingl notches therein, and cutting' dies`carried by said heads opposite said notches 'for cooperation with theedges ot' said notches to ellect the shcaring ci the edges of said sealalter the sides thereot have eeen bent `in iardly by relative inwardmovement et said bendingi jaws.

i sealing device tor applying a seal to a strap, comprising` a pair ot'relatively fle heads having inwardly directed bending' jaws adapted toengage and bend the side legs ot a chanucl-slnlpedlseal, said headshaving passages 'formedtherein, cuttine` dies removably located in saidpassages and having their cutting,1 edges located bc neath said jaws,and means for opera-tingr said heads to etl'ect the cutting` ot a sealby said cutting dies and the bending ot the seal by said i1 sealingdevice for applying a seal to a strap, comprisng a pair ot' heads havingpassages therein, a pair of cheek plates, pivot pins engaging said headsand said cheek plates, cutting dies mounted in said passages, said dieshav ing` notches therein to be engaged by said pins.

2l. A sealing device for zlpplyinj.,r a seal to a strap, comprising apair ot' rela-tively movable heads, a pair ol 'cheek plates mounted onop pcsite sides oli said heads, a pair of pivot pins each engagingr oneof said heads and both of said cheek plates, and retaining platesmounted on the outer sides ot' said check plates, said pins havinggrooves adapted to be engaged by parts ot said retaining plates.

ros

25. A. sealing device for applying a seal to a strap,comprising a pairof relatively movable heads, a pair of cheek plates mounted on oppositesides of said heads, a pair of pivot pins each engaging one of saidheads and both of said cheek plates, and retaining plates mounted on theouter sides of said cheek plates, said pins having grooves adapted to beengaged by parts of said retaining plates, said retaining plates havingresilient portions adapted to extend over the edges of said cheekplates.

2li. A sealing device for implying` a seal to a strap, comprising a pairof relatively movable heads having oppositely disposed passages thereinwith shoulders at the inner ends of' said passages, cutting dies.mounted in said passages and having parts engaging said shoulders, saidcutting dies being insertable in said passages only from the endsthereof opposite said shoulders, and means for detachably retaining saidcutting dies in said passages.

27. A sealing device for applying a seal to a strap, comprising a pairof relatively movable heads having inner curved faces, said faces beingprovided with oppositely disposed recesses, a traveling pin mounted insaid oppositely disposed recesses, a cheek plate pivotally connected toeach of said heads, and means for effecting relative angular movement ofsaid heads.

28. A sealing device for applying a seal to a strap, comprising a pairof relatively movable heads having inner curved faces, means forpivotally connecting said heads, said.

curved faces being provided with oppositely disposed recesses, atraveling pin mounted in said oppositely disposed recesses, and meansfor effecting relative angular movementJ of said heads.

29. AA sealing device comprising a pair of relatively movable headshaving inwardly directed jaws for engaging the sides of a seal, a saddlemember pivotally mounted always midway between said heads for engagingthe betteln of said seal, and means for effecting relative angular'movement of said heads.

3.0. A sealing device comprising a pair of relatively movable headshaving seal engaging parts and provided with oppositely disposed curvedsurfaces, a saddle member mounted between said heads for engaging thebottom of said seal, said saddle member having curved surfaces adaptedto coact with the curved surfaces of said heads, and means for effectingrelative angular movement of said heads.

3l. A sealing device comprising a pair of relatively movable headshaving inwardly directed seal engaging parts, a pivot pin engaging eachof said heads, a connecting plate engaging said pivot pins, said headseach having a. curved surface concentric with its pivot pm, a saddlemember mounted between said heads for engaging the bottom of said seal,said saddle member having curved surfaces adapted to ride on said curvedsurfaces of said hea-ds, and means for effecting relative angularmovement of said heads.

32. A sealing device comprising a pair of relatively movable headshaving inwardly directed seal engaging parts, a pivot pin engaging eachof said heads, a connecting plate engaging said pivot pins, said headseach hav-V ing a curved surface concentric with its pivot pin, a saddlemember mounted between said heads for engaging the bottom of said seal,said saddle member having curved surfaces adapted to ride on said curvedsurfaces of said he: ds, means for effecting relative angular movementof said heads, and means independently of said curved surfaces forretaining said saddle member between said heads.

A sealing device for applying a seal to a strap, comprising a pair ofrelatively movable heads having inwardly directed jaws adapted to engagethe sides of a channelshaped sealing blank, cheek plates pivotallyconnecting said heads, a saddle member pivotally connected to said cheekplates and located between said heads for engaging vthe bottom wall ofsaid sealing blank, means for effecting relative angular movement ofsaid heads, and means for guiding said heads in symmetrical relation tosaid-saddle and said sealing blank during said relative movement.

Sil. A sealing device comprising a pair of relatively movable members,connecting means on which each of said members is separately pivoted,said members being adapted to receive an open seal and a` strap betweenthem,and means carried by said members and adapted upon relativemovement thereof to bend the seal about the strap and then shear theedges of the seal and the strap.

35. A sealing device comprising relatively movable heads having inwardlydirected jaws adapted to receive a seal between them, cutting dieslocated beneath. said jaws, means located between said dies forsupporting a seal, and means for effecting movement of said headsinwardlytoward each other.

ln testimony whereof, we have subscribec our names.

CHESTER M. MACCHESNEY. JOI-INIEKERN OTT.

